Insulator.



No. 884,142. PATENTED APR. 7, 1908.

K E. J. FORBMAN.

INSULATOR.

APPLICATION FILED NOV. 2, 1906.

777265Z Wwf/mi2,

. suitable su port by means of w ich the line I UNITED STATES PATENT OFFICE.

' ERNEsT JAY roREMAN, or TRINIDAD,commune.y

INSULATOR.

Specification of Letters Patent.

Patented April 7', 19GB.

Application illed November 2, 1906. Serial No. 341,766. l

To all whom it may concern: l

Be it known that I, ERNEST J. FOREMAN, a citizen of the United States, residing a't Trinidad, in the county of Las Animas and State of Colorado, have invented a new and useful Insulator, of which the followingis a I* specification.`

This invention relates to insulators for electric conductors and has-for its ob"e ctl to provide a comparatively1 simple an inexpensive device of thisc aracter capable of eing readily placed in osition on. the crossarm'of a telegraph or te ephone oleor other wire may e supported in elevated position and thoroughly lnsulated from its support.

'A further object of thel invention is to provide means -for locking 'the insulator on the `gross-arm or sup ort, and means for preventlng theaccumu ation `of water between the insulator and said support,l

A further object ,is to provide an insulator4 having circumferential grooves or recesses formedin the exterior walls thereof for deilecting the Wateror moisture' on each side.v

of. the wire-receiving opening, and' having spurs or projections depending from .the bottom of the insulator to assist mretarding the llow of water.

A still further object of the invention is to generally improve this class of devices so as to increase their utility, durability and 'eiiiciency i Further ob'ects and advantages will ap-v pear in the ollowing description, it being understood that various changes in form,

' proportionsandl minor details of construc- I ongitudinal sectional view of an insulator 4constructed in accordance perspective vviewo `the 'insulator detached. ig. 3 is a similar view of the insulator look.

tion may be resorted to mithin the scope of the ap nded claims.` f p In t e'accomp'alfying drawings forming a 'art ,of this spec' cation: Figure 1 'is' a tion showi the same in osition on the cross-arm ov a tele raph po e. Fig. 2 is a ing lat the bottom of the latter. Fig. 4 is a fragmentarytransver'se sectional view taken Similar numerals of reference indicate corresponding parts in all'pof the figures 4of the drawin The insu ator comprises a substantially cylindrical body portion 5 formed of por' with ymy 'inven celain, glass or other suitable insulating materlal and having its exterior walls provided with. one\ or more 'circumferential 'l threads 6 adapted to engage correspondingly .shaped grooves 7 formed'in the cross-arm or support 8. Extending longitudinally of the body portion 5 is a wire-receiving slot o1'1` opening 8 adapted to receive the line-wire 9, said slot bein disposed at an angle tothe u he inner or clined inwardlyand upwardly, as indicated at 11. f

Formed inthe opposite ends of the hoods 10 are recesses 12 which serve to prevent the water from'lowing over the side walls of the insulator and thence downwardly over theadjacent'e'nds `L13 of the insulator inl engagement with the line wire,`there being teeth or /serrations 14 formed on the opposite n'ds of y l the hoods so las to collect the water and cause the" latter" to fall drop by drop to the ground.

The 4exterior walls Aof the insulator at the hoods 1()4 are'curved downwardly to for'm troughs1`5 which communicate with circum-w ferentialgrooves 16 whereby ywater or moisture deposited on the exterior walls of the insulator may flow down the sides ofthe latter,

as will be readily understood'.

Extending transversely across the'bottom of the insulator atthe opposite ends thereof are segmental grooves Iory recesses 17` which fintersect the wire-receivin`g slot 8 and form a` terminalrib or segmental flange 18 at each end of's'a'id insulator.

Depending'from the ribs or anges 18 are s acedvprojections or spurs 19 which serve tiie same function as the serrations 1 4, lia-mel to col-lect ,the water flowing over the si e walls'of the insulator and `cause the latter to fall drop by drop to the ground in the manner l before "'stated.

l Attentionis vhere called tothe fact that the i 'oove's 17 assist in preventing the water adering to, the pro'ectlons 19 from 1 flowmg longitudinally oft y e insulator andaccumufis latingl between said insulator and the support 8. V

As al 'meansfforf locking the line Wire 9 within. the slot or groove 8 there is provided a binding wire 2O an intermediate 'portion of which extends through a longitudinal recess.

21 formed. in the insulator above the slot 8 while its op osite ends 'are coiled orother# Ywise twists cated at 22; 1

` `,The threads-6 at the bottom of the insuv later are provided with transverse notches or locking recesses 23 adapted to receive a locking key or rod 24 which extendsthrough a groovevor recess 2 5 in the insulator support 8 and is b'ent 4downwardly in engagement 'with said sup ort, as indicatedat 26. The. diameter of t e Wire or locking rod 24 is preferably less than that of the groove 25 so that 'an Waterormoisture that-may accumulate posite ends of the slot and thus drain to aground. It will here be noted that the wire or r'od 24 by engagement with the walls ofthe recess 25 and the walls o f the notches or recesses 23 Willlo'ck'tlie insulator against twisting or rotary movement within .the supengagement with ad'acent sides of 'the'support 8 thusv locking t e insulator against lateral, longitudinal and rotary movement. The binding wire 2() is then threaded through the opening 21 and the opposite ends thereof around the line Wire, as indi'- etween theinsulator and said su ort may he'guided by the wire through t e twisted or coiled around theline Wire, in the manner before stated..

It will of course be understood that the insulator may be made in different sizes and shapes and that any number of openings for thereception of the tie wires ma be ein` ployed when the insulator is designed for l special 'pur oses.

Having t us described the invention what.

is claimed is:

1.' insulator having a longitudinalwirereceiving slot and rovided with oppositely disposed over-hanging hoods and circumferential draining grooves, there being depressions formed in the exterior walls of the insulator at the hoods and communicating with said grooves.

. 2,. An insulator provided with a longitudinal wire-receiving slot,; hoods extending laterally from the o posite ends of the insu-- lator and having t eir free ends serrated, there being transverse grooves formed in the bottom of the insulator'and intersecting the wire-receiving slot.

3; An insulator provided with a longitudina slot adapted to receive a line wire and 'having its opposite ends extended longitudi;

nally to form over-hanging hoods, there being spaced grooves formed in the exterior walls o the insulator, and troughs formed in the exterior walls of the over-hanging hoods andl'f communicating with the adjacent grooves.

In testimony thatI claim the lforegoing as my own, I have hereto affixed my signature inithe presence of two witnesses.

ERNEST JAY FOREMAN.

Witnesses:

E. l. LiNsxnY,

E. O. WiLLsoN. 

